diff --git a/ch01-abstracts/pom.xml b/ch01-abstracts/pom.xml
index e9521e7..be09b16 100644
--- a/ch01-abstracts/pom.xml
+++ b/ch01-abstracts/pom.xml
@@ -29,7 +29,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.5</version>
+            <version>3.5.6</version>
         </dependency>
 
     </dependencies>